Air treatment device



FIG. 1 is a front, top, and right perspective view of an air treatment device;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a top plan view of thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines shown in the drawings are shown for illustrative purposes only and form no part of the claimed design. In addition, the surface shading illustrated in the drawings is provided merely to highlight the contour of the design; it is not intended to be illustrative of texture or gloss. 

CLAIM The ornamental design for an air treatment device, as shown and described. 